Made from premium, durable zinc die-cast and polyamide materials ensure heavy duty use and longer life service Fixed top for ease of rope handling, smooth roller provides great rope traverse Pulley rotation cylinder head is solid, durable and can lift heavy objects Can be used in conjunction with indoor or outdoor ropes or wire ropes Can flexibly slide the pulley, effectively prevent the rope/cable/rope from knotting, and suspend heavy objects to reduce the load Waterproof, rust-proof, corrosion-resistant, can be used in humid environment, strict process, reliable and durable The pulley block is a lifting tool with a strong carrying capacity Can carry out lifting, passing or pulling work